<template>
    <div class="header">
      <div class="header-container" style="height: 50px;">
          <nav class="main-navigation" style="height: 50px;">
              <ul style="margin-top: 14px">
                  <li><a href="/home">首页</a></li>
                  <li><a href="/about">关于</a></li>
                  <li><a href="/lastanalyse">最近分析</a></li>
                  <li><a href="/demo/main">样例Demo</a></li>
              </ul>
          </nav>
          <el-dropdown style="position: relative; right: 20px;">
            <span class="el-dropdown-link">个人中心</span>
            <el-dropdown-menu slot="dropdown">
              <el-dropdown-item divided ><a href="/" style="color: black;">注销</a></el-dropdown-item>
            </el-dropdown-menu>
          </el-dropdown>
          <!-- <a href="#" class="person">个人中心</a> -->
      </div>
    </div>
  </template>
  
  <script>
  export default {
    data() {
      return {
        title: '顶部信息框'
      }
    },
  }
  </script>
  
  <style>
  .el-dropdown-link {
    cursor: pointer;
    color: #ccc;
    transition: filter 0.3s;
  }
  .el-dropdown-link:hover {
    color: white;
  }
  .el-main {
      background-color: #E9EEF3;
      color: #333;
      text-align: center;
      line-height: 160px;
    }
  /* 设置网页头部框的样式 */
  .header {
    width: 100%; /* 宽度占据全屏 */
    background-color: black; /* 背景颜色 */
    color: white; /* 字体颜色 */
    height: 50px;
    text-align: left; /* 文本居中 */
    padding: 20 0; /* 上下边距 */
    position: fixed; /* 固定定位 */
    top: 0; /* 顶部对齐 */
    left: 0; /* 左边对齐 */
    z-index: 1000; /* 确保悬浮于页面其他内容之上 */
    
  }
  .header-container {
      max-width: 2000px;
      margin: auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
  }
  
  .main-navigation {
      display: flex;
      left: 750px; 
      /* flex: 1; */
  }
  
  .main-navigation ul {
      list-style-type: none;
      padding: 0;
      display: flex;
  }
  
  .main-navigation ul li a {
      text-decoration: none;
      color: #ccc;
      padding: 0 25px;
      display: block;
      transition: filter 0.3s;
  }
  .main-navigation ul li a:hover{
    color: white;
  }
  
  .search-bar {
      display: flex;
      
  }
  
  .search-bar input[type="text"] {
      border: 1px solid #ccc;
      padding: 5px;
  }
  
  .search-bar button {
      padding: 5px 10px;
      border: none;
      background-color: #333;
      color: white;
      cursor: pointer;
  }
  
  .search-bar button:hover {
      background-color: #555;
  }
  .person{
    display: flex;
    padding: 5px 10px;
    border: none;
    color: #ccc;
    right: 40px;
    transition: filter 0.3s;
  }
  
  .person:hover{
    color: white;
  }
  </style>